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Cash, Cash Equivalents, and Investments - Gross Unrealized Losses and Fair Values for Available-for-Sale Investments (Detail) $ in Thousands | Jul. 01, 2018 USD ($)
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Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | $ 350,445
Unrealized losses, less than 12 months | (1,392)
Fair value, 12 months or greater | 80,415
Unrealized losses, 12 months or greater | (491)
Total fair value | 430,860
Total unrealized losses | (1,883)
Treasury Bills |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 84,309
Unrealized losses, less than 12 months | (149)
Fair value, 12 months or greater | 48,464
Unrealized losses, 12 months or greater | (183)
Total fair value | 132,773
Total unrealized losses | (332)
Asset-Backed Securities |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 90,411
Unrealized losses, less than 12 months | (496)
Fair value, 12 months or greater | 4,462
Unrealized losses, 12 months or greater | (28)
Total fair value | 94,873
Total unrealized losses | (524)
Sovereign Bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 3,562
Unrealized losses, less than 12 months | (9)
Fair value, 12 months or greater | 4,581
Unrealized losses, 12 months or greater | (58)
Total fair value | 8,143
Total unrealized losses | (67)
Municipal Bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 3,692
Unrealized losses, less than 12 months | (24)
Fair value, 12 months or greater | 0
Unrealized losses, 12 months or greater | 0
Total fair value | 3,692
Total unrealized losses | (24)
Agency Bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 29,246
Unrealized losses, less than 12 months | (1)
Fair value, 12 months or greater | 0
Unrealized losses, 12 months or greater | 0
Total fair value | 29,246
Total unrealized losses | (1)
Corporate Bonds |
Schedule of Available-for-sale Securities [Line Items] |
Fair value, less than 12 months | 139,225
Unrealized losses, less than 12 months | (713)
Fair value, 12 months or greater | 22,908
Unrealized losses, 12 months or greater | (222)
Total fair value | 162,133
Total unrealized losses | $ (935)

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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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